Joe
Eugene Spooner wrote:
Eeeeeerrrrrrr ; that HV is a Negative Voltage to the case and HV probe meter would kick the wrong way. Just have got to be careful with that stuff as it has "Punch" ! Best: Eugene
Joe Dickerson wrote:
Joe, Did you check the high voltage rectifier and the H.V. capacitor? Also, check the magnetron. There should be low resistance across the two pins. To check the H.V. getting to the magnetron, clip the ground lead of the high voltage probe to ground reference and touch the point of the probe to ground to see if there is high voltage there. This may be obvious to you, but I don't know how much training you've had in microwave. Just trying to help.lol
Joe
Joe Tech2004 wrote:
Sharp microwave R-508AK mfd-1998
Above unit belongs to my mother who lives in Detroit, where I am at now, I had an earlier problem awhile back with the magnetron kept running even when unit was off...
Fix Was: Stuck relay from power surge, removed outer relay housing cleaned carbon from contacts... BINGO....
Now current problem: Unit powers up but doesn't heat.
Little fuse type CES6 20Amp mounted to the metal shield was blown, I temporarily replaced with 15Amp car fuse (all i had wasn't planning on this). Anyway fuse doesn't blow but unit still no heat. Sticker inside states when replacing that fuse to also replace monitor switch, which i'm not sure which is monitor switch, All three switches that operate via door opening & closing check fine. I am not in a very good serviceable position working on her kitchen counter so please bear with me.
There is what appears to be a relay on the front control panel board lower left corner, the best i can make out any writing around this on the board is
RY2/HB2/ACCOM & on component itself i can make out DU1PU. If i unplug red wire going to this no changes, but unplug black wire total shut down (obviously main ground..??) my meter reads up to 20 meg-ohm & unit checks open but how can that be if when I lift the black wire i get total shutdown, i'm wondering if this is my problem & also what switch are they referring to when they say replace monitor switch along with little fuse. One last thing the component (relay..??) i've been referring to does have a slight melted spot in plastic housing (may be my problem or from last problem with power surge) i'm returning home friday 07/09/04 so i would like to try to fix this before i leave.
Any & All suggestions I would greatly appreciate. Thanks Group "joe"
Joes....Electronics (Joe:Tech/2004) [EMAIL PROTECTED] Fax::509-479-2283
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-- Joe Dickerson Joe's TV & Appliance Rt 1 Box 3781 Jasper, Texas 75951 (409) 384-3325 use same no. for fax
_______________________________________________ Tech Repair CD...order your just $49.00 plus shipping...One year of updates free. www.intrepid-video.com www.tech-repair.net Techs mailing list [EMAIL PROTECTED] http://intrepid-video.com/mailman/listinfo/techs_intrepid-video.com
-- Joe Dickerson Joe's TV & Appliance Rt 1 Box 3781 Jasper, Texas 75951 (409) 384-3325 use same no. for fax
_______________________________________________ Tech Repair CD...order your just $49.00 plus shipping...One year of updates free. www.intrepid-video.com www.tech-repair.net Techs mailing list [EMAIL PROTECTED] http://intrepid-video.com/mailman/listinfo/techs_intrepid-video.com
